Otherwise an exception is thrown:
Caused by: org.everit.json.schema.SchemaException: #: could not determine schema version: no meta-schema is known with URL [http://json-schema.org/schema#]
Some links reference a file in GitHub, but not as a raw.githubusercontent.com link, so that these references also could not be loaded correctly.
"$schema": "http://json-schema.org/schema#" should be changed in: "$schema": "http://json-schema.org/draft-07/schema" (or some other version)
Otherwise an exception is thrown: Caused by: org.everit.json.schema.SchemaException: #: could not determine schema version: no meta-schema is known with URL [http://json-schema.org/schema#]